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Vipul's avatar
Vipul
Icon for Nimbostratus rankNimbostratus
Nov 18, 2019

Find F5 device associated with a virtual server

Team,

 

I have a VIP given for a virtual server. There are 90 F5s in my network.

How can I find the associated F5 among the 90 F5s in my network ?

 

Regards

1 Reply

  • Here's how you can do it. Its not like you need all 90 F5 devices config. It requires a simple DNS understanding.

    Lets assume this is an internal setup and your URL is abc.example.com

    That URL when you dig it, it will give you a DNS resolution, sometimes a direct A record or a CNAME.

    abc.example.com A 10.10.10.10

    Once you do a tracepath for that, you will get a response back too on the last hop.

    #tracepath 10.10.10.10
     
    -
     
    -
    - abc-setup-example.com (10.10.10.10)
    -- somedevicesname-selfip

    Similarly you can do it via the URL name too.

    #tracepath abc.example.com
     
    -
     
    -
    - abc-setup-example.com (10.10.10.10)
    -- somedevicesname-selfip

    The last line hop is the self ip of the ltm. You can do a SSH to that self ip and get inside the ltm and find the setup.